Advertising did not invent the products or services which called forth jobs, nor inspire the pioneering courage that built factories and machinery to produce them. What advertising did was to stimulate ambition and desire - the craving to process, which is the strongest incentive to produce. To satisfy this craving the factory was impelled to turn itself into a growing factory; and then, by the pressure of mass demand, into many factories. Mass production made possible mass economies, reflected in declining prices, until the product that began as the luxury of the rich became the possession of every family that was willing to work.

As quoted in: Contemporary Quotations (Vail-Ballou Press, 1964), p. 82.